JPS5823829B2 - soldering equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a soldering device used, for example, to coat lead wires protruding from both sides of the main body of an electronic component with a solder film.

Conventionally, there was no work holder that could easily and automatically mount a large number of electronic components during soldering, which was inconvenient.

An object of the present invention is to provide a soldering device centered on a work holder that is improved in these respects. A holder is provided, and this work holder has a large number of workpiece suction grooves having a magnetic attraction force formed in parallel from one end to the other end, and the workpiece suction grooves are set in a horizontal position and a vertical position. A work holder is rotatably provided with respect to the conveyance cheno, and a workpiece holder is attached to the outside of the workpiece suction groove along the conveyance cheno at a position where the workpiece suction groove is set in a horizontal position. For soldering, there is a work mounting section in which the work is mounted with the part protruding, and a work holder rotation in which the work is placed in a vertical position by rotating the work holder and the part to be soldered is positioned below the work holder. A soldering device characterized in that a moving part, a fluxing part for applying flux to the part to be soldered, and a soldering part to solder to the part to be soldered are arranged in sequence. This is related.

Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

As shown in FIGS. 1 and 2, the main body frame 1
Two sets of endless conveyor chains 3 are wound around two sets of sprocket wheels 2 located at both ends of the conveyor chain 3, and a work mounting section 4, a work holder rotation section 5, and a work alignment section 6 are installed along the transport chain 3. , part 7 for upper fluxing, part 8 for upper soldering, work alignment part 9, part 10 for lower soldering, part 11 for lower soldering, washing part 12, drying part 13, and workpiece removal part 14. Arrange.

15 is a drive unit for the sprocket wheel 2 at one end.

Further, as shown in FIG. 2, a work supply section 21 is provided from the outside to the work device section 4.

In this work supply section 21, a shaft 24 of a work supply drum 23 is rotatably supported by a supporting section 22 protruding from the right end of the main body frame 1, and a sprocket wheel of this shaft 24 and a plurality of sprocket wheels in the main body frame 1 sprocket wheel 2
An endless workpiece carrying-in chino 26 is wound around the drum 5, and the workpiece supplying drum 23 and the workpiece carrying-in chino 26 are synchronously driven by a morph (not shown).

The workpiece carrying-in cheno 26 is composed of two pieces arranged in parallel.

In addition, in the workpiece mounting section 4, between the two workpiece carrying-in chenos 26, the workpiece W to be soldered is moved up and down by a fluid pressure cylinder 27 and held across the two chenos 26. A push-up plate 28 is provided to push up the lead wires l on both sides.

The workpiece loading cheno 26 and the push-up plate 28 will be described in detail later.

The fluxing parts 7 and 10 and the soldering parts 8 and 11 are connected to the base 32 of the upper flux tank 31 and the base 34 of the lower solder tank 33, as shown in FIG.
and the base 37 of the upper solder tank 36 and the base 39 of the lower flux tank 38.
Hydraulic cylinders 41 and 42 are connected to each other by a strut 40, and are mounted on a base integral with the bottom of the main body frame 1 below the lower flux tank 38 and the lower solder tank 33.
The upper ends of the piston rods of the hydraulic cylinders 41 and 42 are connected to the bases 39 and 34 of the lower flux bath 38 and the lower solder bath 33, respectively.

Next, as shown in FIGS. 3 and 4, two shafts 51 are provided protruding from both sides of the conveyance ceno 3 at predetermined intervals, and support plates 52 are fixed on both sides via the shafts 51. death,
A pair of bearing portions 53 are provided on the outer surfaces of the support plates 52 on both sides, and a shaft 54 is provided between each bearing portion 53 on both sides.
A rotary plate 56 having a bearing portion 55 rotatably fitted to the shaft 54 is rotatably provided, and an engagement pin is provided on the upper side of the rotary plate 56 on both sides via support portions 57. 58 so as to protrude in the direction opposite to the direction of movement, and
A work holder 60 is fixed to the outer surfaces of the rotating plates 56 on both sides via supporting parts 59.

This work holder 60 has a large number of V-shaped work suction grooves 61 continuously formed on the outer surface from one end to the other end, and a large number of round bar-shaped magnets 62 are embedded inside at regular intervals. This magnet 62 allows the work W to be soldered into each work adsorption groove 61.
magnetically attracts the magnetic body.

The workpiece W has lead wires l protruding from both sides of an electronic component body to be soldered.

This lead wire l is made of a non-magnetic material.

Further, a roller wheel 64 is rotatably supported inside both ends of the support plate 52, and the roller wheel 64 is connected to the upper and lower guide rails 65 provided on the support bodies 65 disposed above and below the conveyance cheno 3.
6 to support and guide.

Further, a pair of receiver rails 67 are provided on the upper surface of the lower support body 65, and the carrier supports and guides the conveyance ceno 3 by means of the rails 67.

Further, the bearing portion 55 of the rotating plate 56 is formed in a substantially semicircular shape, and two conical grooves 69 are provided at an interval of 90° on the circular arc-shaped outer peripheral surface of the bearing portion 55. bolt 70
A pressure member T2 such as a spring and a steel ball 73 that is elastically pressed by the pressure member 72 are fitted into the tip recess 71 of the bolt 70.
is fitted into either one of the two conical grooves 69.

This maintains the state in which the work holder 60 is positioned directly beside or directly below the shaft 54.

Particularly when the work holder 60 is located right next to the shaft 54, the receiver fixed to the side of the support body 65 locks the lower side of the rotary plate 56 with the part 74, thereby reliably absorbing the load of the work holder 60. To support.

Further, as shown in FIGS. 4 and 5, the workpiece loading chino 26 has a link piece 77 provided with a recess 76 into which the non-magnetic lead wires l on both sides of the workpiece W body are fitted. A recess 78 is also provided between each link piece 77.

The recesses 76.7B are provided at the same intervals as the work suction grooves 61 of the work holder 60.

In addition, a mounting section 80 that is moved up and down by the piston rod 79 of the fluid pressure cylinder 27 is installed below between the pair of workpiece loading chenos 26, and a pair of the push-up plates 28 that are fixed to the mounting section 80 are mounted below. Arrange.

This push-up plate 28 is formed to have approximately the same overall length as the work holder 60, and has a work suction groove 60 of the work holder 60.
A large number of recesses 81 similar to the recesses 76 and 78 are formed at intervals equal to 1, and these recesses 81 allow the lead wire l of the workpiece W supported by the recesses γ6 and 78 of the workpiece loading chino 26 to be connected to the workpiece. Work suction groove 6 of holder 60
Try pushing it up to 1.

Next, as shown in FIGS. 6 and 7, in the work holder rotating section 5, two guide shafts 86 are connected in parallel to each other via two sets of support sections 85 on both sides of the lower surface of the fixed frame 84. The horizontal bearings 88 on both sides of the horizontal moving body 87 are slidably fitted to the guide shafts 86 on both sides, and the elevating body 90 is fixed to the vertical bearings 89 on both sides of the horizontal moving body 87. Sliding shafts 91 protruding from the upper surfaces of both sides are slidably fitted.

Further, a cam shaft 94 is rotatably provided on the lower surface of the horizontal moving body 87 via a pair of support parts 93, and the center of the horizontal moving cam body 95 and the center of the elevating cam body 96 are attached to the cam shaft 94. Fix the parts.

The horizontal movement cam body 95 has an endless cam groove 97 on its circumferential surface.
A cam follower 99 rotatably supported on a plate 98 is slidably fitted into the cam groove 97 to mount the fixed frame 84 in a fixed position. An endless cam groove 100 is provided on one side, and a cam follower 102 rotatably supported on a plate 101 mounted on the upper surface of the elevating body 90 is slidably fitted into the cam groove 100.

A gear 103 provided at one end of the camshaft 94 is meshed with a gear 106 of a drive shaft of a motor 105 fixed to the lower surface of the horizontal moving body 87 via a plate 104, and the motor 105 drives the cam body. Rotate 95°96.

Further, as shown in FIG. 8, a rotating shaft 113 is rotatably provided on the elevating body 90 via bearings 11L112 on both sides and the center, and a bevel gear 114 of this rotating shaft 113 is provided.
In addition, a bevel gear 117 of a drive shaft of a motor 116 fixed through a plate 115 is attached to the upper surface of the elevating body 90, and a screw gear 118 is attached to two places of the rotation shaft 113.
Further, shafts 122 of gears 120 and 121 that mesh with each other are rotatably provided on both sides of the elevating body 90 through bearings 119, and one shaft 122 of the gears 120 and 121 that mesh with each other is rotatably provided. A screw gear 123 is provided that meshes with the screw gear 118 orthogonally.

Further, as shown in FIG. 7, rack guide bodies 124 are fixed to both sides of the elevating body 90 in a figure-eight shape, and a rack 125 is fitted into the guide groove of each rack guide body 124 so as to be freely advanced and retracted. Each rack 125 and the gear 120,1
21 through the notch 126 of the rack guide body 124.

A retaining portion 1 having a long hole 127 at the lower end of each rack 125
28 is fixed.

Further, a chain presser body 129 is fixed to the middle part of racks 125 arranged in a figure-eight shape on both sides of the elevating body 90.

A groove 130 is provided on the lower end surface of the chain presser body 129 on both sides to fit into the center portion 3a of the conveyor chain 3.

Also, as shown in FIG. 9, the plate 1 is attached to the elevating body 90.
34, and this mounting is accomplished by providing limit switches 135 on both sides of the plate 134, and providing operating pieces 137 on the rotation axis 113 for actuating the detection portions 136 of each limit switch 135.
35, the rotating shaft 113 is rotated in the forward and reverse directions, for example by ±12
The motor 116 is controlled to rotate by 0°.

Next, the effect will be explained.

- Workpieces W are sequentially fitted into the outer circumferential recess 141 of the workpiece supply drum 23 by a parts feeder (not shown), and the workpiece supply drum 23 is driven synchronously with the workpiece supply drum 23 and the workpiece loading chino 26 via the common shaft 24.
The workpiece W is delivered from there to the workpiece loading cheno 26.

This workpiece loading cheno 26 supports the workpieces W by fitting the lead wires l on both sides into the recesses 76 and 78 on both sides, and supports the workpieces W in number to be held in the workpiece suction grooves 61 of the workpiece holder 60.
is conveyed to the upper part of the work mounting part 4 by passing directly under the work holder rotating part 5.

Above the fluid pressure cylinder 27 of this work mounting section 4,
A work holder 60 is waiting, which is supported by the transfer ceno 3 and rotated downward by the work take-out section 14 in the previous process so that the work suction groove 61 is set in a horizontal position. By raising the push-up plate 28, the recesses 81 of the push-up plate 28 support the lead wires l on both sides of the workpiece W instead of the recesses 76 and 78 of the workpiece loading chino 26, and the workpiece holder 60
When the workpieces W are pushed up to the workpiece suction grooves 61, the magnetic bodies of the workpieces W are attracted by the magnets 62 of the workpiece holder 60 and are simultaneously attracted into the workpiece suction grooves 61.

In this way, the motor 116
is driven to lower the four racks 125 at the same time, and the motor 105 is driven to lower the elevating body 90 using the elevating cam body 96. The central portions 3a of the two rows of conveyance chenos 3 are pressed and fixed from above.

Further, the horizontal moving body 87 is moved forward by the horizontal moving cam body 95 in a direction to follow the engaging pins 58 integrated with the work holder 60, and the engaging portions at the tips of the four racks 125 provided on the elevating body 90 are moved forward. The long hole 127 of 128 is fitted into the engagement pin 58.

Subsequently, the motor 116 is reversed to raise the rack 125, the engagement pin 58 is pulled upward by the engagement portion 128, and the work holder 60 is rotated 90° about the shaft 54 to the side of the shaft 54.

As a result, the posture of the work W held in the work suction groove 61 of the work holder 60 is changed from the horizontal posture to the vertical posture.

Subsequently, the motor 105 is driven to move the horizontally moving cam body 9.
5, the horizontal moving body 87 is moved backward, the engaging part 128 is removed from the engaging pin 58, and the elevating body 90 is raised by the elevating cam body 96, and the chain presser body 129 is released from the conveying chino 3.

Next, the work holder 60 is transported, and the work alignment section 6 aligns the lower end surfaces of the main bodies of each work W to a predetermined soldering level, and then the work W in the vertical position is placed above the upper flux tank 31. Then, the upper flux tank 31 is raised by the hydraulic cylinder 42, and one lead wire l of the workpiece W is immersed in the flux inside, so that almost the entire lead wire l is coated with flux.

Also, when the workpiece W is above the upper solder bath 36,
The upper solder tank 36 is raised by the hydraulic cylinder 41, and the melted solder inside is removed from the one lead wire l.
The solder film is applied to almost the entire surface of the solder.

Subsequently, when this workpiece W is folded back from the upper moving part to the lower moving part of the conveyance cheno 3, one of the lead wires 1 is reversed upward, and the other lead wire 1, which had been pointing upward until then, is turned over. is reversed downward.

The lower end surface of the main body of this inverted workpiece W is the workpiece alignment part 9
Align the specified soldering to the level.

Next, by operating the hydraulic cylinder 4L42 to move the lower flux tank 38 and the lower solder tank 33 up and down with respect to the workpiece W moving in the lower moving part, almost the entirety of the other lead wire l is moved. Soldering can also be coated with a film.

Note that the upper flux tank 31 and the lower solder tank 33 are connected to the support column 3.
5, fluxing on the upper side and soldering on the lower side can be done at the same time, and similarly soldering on the upper side and fluxing on the lower side can be done at the same time, making it efficient. be.

Next, in the cleaning section 12 , each work W on the work holder 60 is passed through an immersion cleaning tank 143 and a steam cleaning tank 144 to be cleaned, then dried in a drying section 13 , and then in a workpiece take-out section 14 . Each work W from the work holder 60
Remove.

In this workpiece take-out section 14, endless chines 1 for carrying out are provided on both sides.
46 corresponding to four rows of work holders 60
The workpiece receiver in the row is provided with a box 147, and the workpiece receiver is provided with a workholder rotation means (not shown) for rotating the workholder 60 downward toward the box 147.

Since this rotating means has the same structure as the work holder rotating section 5, the explanation thereof will be omitted.

Further, this workpiece take-out section 14 is provided with a push-down part 148 shown in FIG. 4 that can be moved up and down by a fluid pressure cylinder 149 shown in FIG. The workpiece W adsorbed in the groove 61 is forcibly peeled off and the workpiece receiver is placed in the box 147.
let it fall.

As described above, according to the present invention, a work holder for holding a work to be soldered is provided in an endless conveyor chino, and this work holder has a large number of magnetically attractive parts extending from one end to the other end. The workpiece suction grooves are formed in parallel, and a workpiece holder is rotatably provided with respect to the conveyance cheno so that the workpiece suction grooves are set in a horizontal position and a vertical position. At a position where the workpiece suction groove is set in a horizontal position, the workpiece mounting section and the workpiece holder are rotated so that the part to be soldered protrudes from the workpiece suction groove with respect to the workpiece suction groove. The work holder rotating part places the work in a vertical position and the part to be soldered is positioned below the work holder, the wave soldering described above involves applying flux to the part; Since the soldering parts are arranged sequentially, when fluxing and soldering the workpiece in a vertical position, the workpiece suction groove of the work holder is placed in a horizontal position, and the workpiece suction grooves in this horizontal position are placed in a horizontal position. On the other hand, a large number of workpieces can be easily and automatically mounted magnetically.

[Brief explanation of drawings]

The figure shows an embodiment of the soldering device of the present invention.
Fig. 1 is a plan view thereof, Fig. 2 is a front view thereof, Fig. 3 is a partially cutaway plan view of the transport means, Fig. 4 is a sectional view of the transport means and workpiece mounting section, and Fig. 5 is a workpiece loading section. A front view of a part of the chino, FIG. 6 is a cross-sectional view of the rotating part of the work holder, FIG. 7 is a partially cutaway front view thereof, FIG. 8 is a cross-sectional view taken along the line ■-■ of FIG. 7, and FIG. 9 is a sectional view taken along the line IX-IX in FIG. 8; W... Workpiece, l... Lead wire to be soldered as part, 3... Transport chain, 4...
...Work mounting part, 5...Work holder rotation part, 7...Flux attachment part, 8...
・Soldering part, 60...Work holder, 61
・・・・・・Work suction groove.

Claims (1)

[Claims] 1. A work holder for holding a work to be soldered is installed in an endless conveyance ceno, and this work holder has a large number of work suction grooves with magnetic attraction force formed in parallel from one end to the other end. At the same time, a work holder is rotatably provided with respect to the conveyance cheno so that the work suction groove is set in a horizontal position and a vertical position, and the work suction groove is set in a horizontal position along the conveyance cheno. At the position where the workpiece is to be soldered, the part to be soldered protrudes from the workpiece suction groove with respect to the workpiece suction groove, and the workpiece is placed in a vertical position by rotating the workpiece holder. The work holder rotating part positions the part to be soldered below the work holder, the part to which flux is applied to the part to be soldered, and the part to be soldered to the part to be soldered to be soldered. A soldering device characterized by sequentially arranging parts and parts.